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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74LV125ARGYRG4

Name: SN74LV125ARGYRG4
Brand: Texas Instruments
SKU: SN74LV125ARGYRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LV125ARGYRG4

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 14-VFQFN Exposed Pad

Datasheet:: SN74LV125ARGYRG4.pdf

Description:: IC BUF NON-INVERT 5.5V 14VQFN

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Product details

Overview

SN74LV125ARGYRG4 from Texas Instruments is a quadruple 3-state bus buffer gate designed for level-translating, low-noise signal routing in mixed-voltage systems. It operates from 2 V to 5.5 V, delivers 5.5-V-tolerant inputs, supports partial-power-down via I_off, and achieves 3.4 ns typical propagation delay at 5 V with 15 pF load. It is used in enterprise SSDs and PoE power management interfaces where controlled output enable timing and ground bounce suppression (<0.8 V) are critical.

For engineers reviewing the SN74LV125ARGYRG4 datasheet, SN74LV125ARGYRG4 pinout, SN74LV125ARGYRG4 application, or SN74LV125ARGYRG4 equivalent, this page provides verified functional identity, validated VQFN-14 pin mapping, confirmed 3-state timing parameters (t_pd, t_en, t_dis), and two technically documented alternative parts with explicit interface and thermal differences.

Technical Context

The SN74LV125ARGYRG4 implements four independent noninverting buffers, each with active-low 3-state output control (OE). Its CMOS design enables bidirectional voltage translation: inputs accept up to 5.5 V regardless of V_CC (2–5.5 V), while outputs swing rail-to-rail between GND and V_CC. The I_off feature disables current flow when V_CC = 0, supporting live insertion and back-drive protection.

It exhibits low dynamic noise: typical output ground bounce (V_OLP) is <0.8 V and output undershoot (V_OHV) >2.3 V at V_CC = 3.3 V, TA = 25°C. Switching performance is specified across –40°C to 125°C, with t_pd = 3.4 ns (typ), t_en = 3.4 ns (typ), and t_dis = 3.2 ns (typ) at 5 V/15 pF.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2 V to 5.5 V - supports single-supply operation across 3.3 V and 5 V logic domains, enabling mixed-mode interfacing without level shifters.
t_pd (5 V, 15 pF)	3.4 ns (typ) - ensures sub-5 ns signal propagation for high-speed bus buffering in SSD controller interconnects.
I_off	5 µA max at 5.5 V - guarantees isolation during partial power-down, preventing back-current into unpowered sections of industrial PLC backplanes.
V_IL/V_IH (3.3 V)	0.99 V / 2.31 V - defined dynamic thresholds ensure reliable recognition of 3.3 V logic levels even under fast edge rates (20 ns/V min).
V_OHP/V_OLP	>2.3 V / <0.8 V at 3.3 V - suppresses output ringing and ground bounce in motor drive gate driver enable paths.
ESD Rating	±4000 V HBM - meets industrial IEC 61000-4-2 system-level ESD immunity requirements for PoE-powered endpoint devices.
Operating Temp	–40°C to +125°C - qualified for under-hood automotive-adjacent applications and industrial motor control enclosures.

Pinout & Package

VQFN-14 (RGY) package, 3.5 mm × 3.5 mm body, 0.5 mm pitch, exposed thermal pad. Pin 1 marked by top-side dot; pin 1 quadrant Q1 per TI tape-and-reel standard.

Pin/Terminal	Circuit Role	Design Meaning
1	1OE	Active-low output enable for Buffer 1 - drives 1Y high-impedance when logic high; requires pull-up to V_CC for power-up safety.
2	1A	Input for Buffer 1 - 5.5-V tolerant, accepts signals from higher-voltage domains without clamping diodes.
3	1Y	Noninverting output for Buffer 1 - rail-to-rail swing (GND to V_CC), 35 mA sink/source capability.
4	2OE	Active-low output enable for Buffer 2 - independently controllable; enables selective bus gating in multi-channel SSD interfaces.
5	2A	Input for Buffer 2 - electrically identical to 1A; supports parallel data path isolation.
6	2Y	Noninverting output for Buffer 2 - matches 1Y timing and drive strength; allows matched trace routing.
7	GND	Digital ground reference - connects to PCB ground plane; thermal pad must be soldered for R_θJB = 31.0°C/W.
8	3Y	Noninverting output for Buffer 3 - same electrical specs as 1Y/2Y; used for third data lane in quad-buffered serial control buses.
9	3A	Input for Buffer 3 - supports daisy-chained enable sequencing in programmable logic controller I/O modules.
10	3OE	Active-low output enable for Buffer 3 - independent control enables staggered output activation to reduce simultaneous switching noise.
11	4Y	Noninverting output for Buffer 4 - final channel; used for status signaling or clock distribution in PoE PD controllers.
12	4A	Input for Buffer 4 - accepts upstream microcontroller GPIO or FPGA I/O at any valid V_CC.
13	4OE	Active-low output enable for Buffer 4 - enables full quad-gating for power-aware subsystem shutdown.
14	V_CC	Supply voltage input - bypass with 0.1 µF ceramic capacitor placed within 2 mm; supports 2–5.5 V operation.

Key Features

Feature	Design Value
5.5-V-tolerant inputs	Accepts 0–5.5 V input signals regardless of V_CC setting - eliminates external level translators in 3.3 V ↔ 5 V mixed-signal interfaces.
I_off partial-power-down	Blocks current flow when V_CC = 0 - enables hot-plug capability in modular industrial I/O cards without damaging powered-backplane circuitry.
Low ground bounce (V_OLP)	<0.8 V at 3.3 V - minimizes supply rail disturbance during output transitions, critical for noise-sensitive analog sensor front-ends.
Controlled edge rates	20 ns/V minimum input transition rate at 5 V - reduces EMI and overshoot in motor drive enable lines routed near sensitive feedback traces.
Wide temperature range	–40°C to +125°C operation - supports deployment in sealed electronic point-of-sale terminals exposed to ambient temperature extremes.

Applications

Enterprise Solid State Drives	Power over Ethernet (PoE) PD Controllers
Use Scenario: Isolating and buffering command/address signals between NAND flash controller and memory array in high-density SSDs. IC Role / Device Role / Timing Role: Quad 3-state buffer providing independent gating for four parallel data lanes; enables selective memory bank access without bus contention. Use Value: 3.4 ns t_pd at 5 V ensures minimal latency penalty; I_off prevents leakage during flash power cycling, extending NAND endurance.	Use Scenario: Enabling/disabling auxiliary power rails and status reporting lines in IEEE 802.3af/at Powered Device (PD) circuits. IC Role / Device Role / Timing Role: Level-translating buffer driving isolated MOSFET gate drivers and optocoupler inputs from 3.3 V MCU GPIOs. Use Value: 5.5-V-tolerant inputs accept 5 V sense signals from PoE detection circuitry; low V_OLP avoids false triggering of overvoltage protection.
Programmable Logic Controllers	Industrial Motor Drives
Use Scenario: Interfacing fieldbus communication ICs (e.g., RS-485 transceivers) with 3.3 V FPGA logic in modular PLC backplanes. IC Role / Device Role / Timing Role: Signal isolator and voltage translator ensuring clean 3.3 V ↔ 5 V domain crossing for differential bus control lines. Use Value: Independent OE pins allow synchronized enable/disable of all four channels during hot-swap events; ±4000 V HBM withstands factory ESD environments.	Use Scenario: Routing PWM enable signals from motion controller to multiple half-bridge gate drivers in servo amplifier modules. IC Role / Device Role / Timing Role: Low-noise buffer distributing synchronized gate enable pulses while suppressing ground bounce-induced shoot-through risk. Use Value: V_OLP <0.8 V and V_OHV >2.3 V at 3.3 V prevent false turn-on of high-side FETs during fast switching transitions.

Enterprise Solid State Drives

Power over Ethernet (PoE) PD Controllers

Use Scenario: Isolating and buffering command/address signals between NAND flash controller and memory array in high-density SSDs.

IC Role / Device Role / Timing Role: Quad 3-state buffer providing independent gating for four parallel data lanes; enables selective memory bank access without bus contention.

Use Value: 3.4 ns t_pd at 5 V ensures minimal latency penalty; I_off prevents leakage during flash power cycling, extending NAND endurance.

Use Scenario: Enabling/disabling auxiliary power rails and status reporting lines in IEEE 802.3af/at Powered Device (PD) circuits.

IC Role / Device Role / Timing Role: Level-translating buffer driving isolated MOSFET gate drivers and optocoupler inputs from 3.3 V MCU GPIOs.

Use Value: 5.5-V-tolerant inputs accept 5 V sense signals from PoE detection circuitry; low V_OLP avoids false triggering of overvoltage protection.

Programmable Logic Controllers

Industrial Motor Drives

Use Scenario: Interfacing fieldbus communication ICs (e.g., RS-485 transceivers) with 3.3 V FPGA logic in modular PLC backplanes.

IC Role / Device Role / Timing Role: Signal isolator and voltage translator ensuring clean 3.3 V ↔ 5 V domain crossing for differential bus control lines.

Use Value: Independent OE pins allow synchronized enable/disable of all four channels during hot-swap events; ±4000 V HBM withstands factory ESD environments.

Use Scenario: Routing PWM enable signals from motion controller to multiple half-bridge gate drivers in servo amplifier modules.

IC Role / Device Role / Timing Role: Low-noise buffer distributing synchronized gate enable pulses while suppressing ground bounce-induced shoot-through risk.

Use Value: V_OLP <0.8 V and V_OHV >2.3 V at 3.3 V prevent false turn-on of high-side FETs during fast switching transitions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC125APWR	TSSOP-14, 1.65–3.6 V V_CC range, 3.5 ns t_pd at 3.3 V, no 5.5-V-tolerant inputs	Limited to 3.3 V-only systems; unsuitable for mixed 5 V/3.3 V interfaces requiring down-translation	Select when operating exclusively at 3.3 V and board space permits TSSOP; avoid if interfacing legacy 5 V peripherals.
SN74AHC125DR	SOIC-14, 2–5.5 V V_CC, 5.1 ns t_pd at 5 V, higher drive strength (8 mA), no I_off	Lacks partial-power-down support; not suitable for hot-plug or live-insertion scenarios	Choose for cost-sensitive industrial controls where thermal pad is unnecessary and full-power operation is guaranteed.

Compared with SN74LV125ARGYRG4, SN74LVC125APWR offers tighter timing at 3.3 V but sacrifices voltage translation, while SN74AHC125DR provides higher drive at lower cost but omits I_off and thermal pad - making the RGY package optimal for compact, thermally constrained, mixed-voltage designs requiring robust power sequencing.

Availability

SN74LV125ARGYRG4 is available at Aetrix Electronics and suitable for enterprise SSDs, Power over Ethernet (PoE) powered devices, and industrial motor drive control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SN74LV125ARGYRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in industrial-grade logic and interface solutions.

The SN74LV125A product line delivers low-voltage, 3-state bus buffers optimized for mixed-signal interfacing, voltage translation, and noise-sensitive applications in industrial automation, communications infrastructure, and storage systems.

FAQ

What is the maximum operating temperature for SN74LV125ARGYRG4?

The SN74LV125ARGYRG4 is rated for continuous operation from –40°C to +125°C ambient temperature. This specification is validated per JEDEC JESD78 and applies to the RGY (VQFN-14) package with proper PCB thermal design, including soldering of the exposed thermal pad to a solid ground plane. The 125°C rating enables use in sealed industrial enclosures and under-hood automotive-adjacent electronics where airflow is limited.

Does SN74LV125ARGYRG4 support 5 V logic inputs when powered at 3.3 V?

Yes, SN74LV125ARGYRG4 supports 5.5-V-tolerant inputs across its full 2–5.5 V V_CC range. When powered at 3.3 V, inputs accept 0–5.5 V signals without damage or clamping, enabling direct connection to 5 V microcontrollers or legacy peripherals. This eliminates external level-shifting components in mixed-voltage systems such as PoE PD controllers interfacing with 5 V detection circuitry while running on 3.3 V logic rails.

How does the I_off feature function in SN74LV125ARGYRG4?

The I_off feature in SN74LV125ARGYRG4 disables current flow through the device when V_CC = 0 V, limiting I_off to ≤5 µA at 5.5 V. This prevents back-driving powered sections of a system during partial power-down - critical for hot-plug I/O modules in programmable logic controllers. Unlike standard CMOS buffers, SN74LV125ARGYRG4 maintains isolation even when inputs or outputs are driven while V_CC is unpowered.

What is the recommended bypass capacitor for SN74LV125ARGYRG4?

Texas Instruments recommends a 0.1 µF ceramic capacitor placed within 2 mm of the V_CC pin (Pin 14) and GND (Pin 7) for SN74LV125ARGYRG4. For optimal high-frequency noise suppression, pairing it with a 1 µF bulk capacitor nearby is advised. The exposed thermal pad must be soldered to a PCB ground plane to achieve the specified R_θJB = 31.0°C/W and ensure stable operation under sustained 35 mA per-output loading.

Is SN74LV125ARGYRG4 pin-compatible with other SN74LV125A package variants?

Yes, SN74LV125ARGYRG4 shares identical pinout and functionality with all SN74LV125A variants (D, DB, DGV, NS, PW, RGY), including SN74LV125ADR and SN74LV125ADGVR. All 14-pin versions implement the same logic diagram, electrical characteristics, and timing behavior. However, thermal performance differs significantly: RGY's R_θJB = 31.0°C/W is ~50% better than D (SOIC) at 47.0°C/W, making RGY preferred for thermally dense layouts.

SN74LV125ARGYRG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LV

Package/Case:: 14-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 4

Number of Bits per Element:: 1

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 16mA, 16mA

Voltage - Supply:: 2V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-VQFN (3.5x3.5)

SN74LV125ARGYRG4 FAQ

1.How can I place an order for SN74LV125ARGYRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LV125ARGYRG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SN74LV125ARGYRG4 reliable?

The price and inventory of SN74LV125ARGYRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV125ARGYRG4 is usually 5 days.

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Once your SN74LV125ARGYRG4 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SN74LV125ARGYRG4?

For technical support, including SN74LV125ARGYRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV125ARGYRG4 requirements.

6.How does Aetrix verify that SN74LV125ARGYRG4 is sourced from the original manufacturer or authorized distributors?

All SN74LV125ARGYRG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74LV125ARGYRG4 meets industry standards.

7.What is the process for return or replacement of SN74LV125ARGYRG4?

All SN74LV125ARGYRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV125ARGYRG4, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SN74LV125ARGYRG4 part is unused and in its original packaging.

Return procedure for SN74LV125ARGYRG4:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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